EN10028-3 P275NH is a pressure vessel steel grade that is widely used in the fabrication of pressure vessels and boilers due to its excellent mechanical properties and resistance to high temperatures. This grade is compliant with the European standard EN10028-3, which specifies requirements for flat products for pressure equipment made of weldable fine-grain steels.

Chemical Composition:

The chemical composition of P275NH is strictly controlled to ensure the material's mechanical properties and weldability. The typical chemical composition is as follows:

· Carbon (C): ≤ 0.16%

· Silicon (Si): ≤ 0.35%

· Manganese (Mn): ≤ 1.50%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.015%

· Aluminum (Al): ≥ 0.020%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.05%

Mechanical Properties:

The mechanical properties of P275NH are characterized by its high strength and good toughness. The following are the typical mechanical properties:

· Yield Strength: ≥ 275 MPa

· Tensile Strength: 430 - 580 MPa

· Elongation: ≥ 22%

· Impact Energy (at -20°C): ≥ 27J

Heat Treatment:

P275NH is generally supplied in the normalised condition. Normalising is a heat treatment process that refines the grain structure and improves the mechanical properties of the steel. The normalised condition is essential for ensuring the steel's performance in pressure vessel applications.

Low-Temperature Impact Test:

P275NH is subjected to a low-temperature impact test at -20°C to ensure that the material maintains its toughness and impact resistance at low temperatures. This is particularly important for applications where the equipment may be exposed to cold environments.

Available Dimensions:

TJC Steel Group offers P275NH pressure vessel steel plates in a wide range of sizes to meet the diverse needs of our customers. The typical available dimensions are:

· Thickness: 6mm - 300mm

· Width: 1500mm - 4000mm

· Length: 3000mm - 18000mm

Main Applications:

P275NH is commonly used in the construction of pressure vessels, boilers, heat exchangers, and other similar equipment. It is suitable for applications where the equipment will be subjected to pressures and temperatures, making it ideal for the petrochemical, chemical, and power generation industries.

TJC Steel Group Supply Cases:

TJC Steel Group has a proven track record of supplying high-quality P275NH steel plates to various industries worldwide. One notable supply case involved the delivery of P275NH plates for the construction of a large-scale petrochemical plant in Southeast Asia. The project required a large quantity of P275NH plates with strict dimensional tolerances and mechanical properties. TJC Steel Group successfully delivered the material on time, meeting all the project specifications and customer requirements.

In conclusion, EN10028-3 P275NH is a reliable choice for pressure vessel applications requiring high strength and good toughness. TJC Steel Group is a trusted supplier of P275NH steel plates, offering a wide range of sizes and a commitment to quality and customer satisfaction.